FGFS-4.1/OpenSceneGraph
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Added computation of occluders volume scaled relative to the frustum volume,

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all volumes computed in eye coords.
This commit is contained in:
Robert Osfield
2002-06-15 12:14:42 +00:00
parent 25b420ac0e
commit 52c36dde70
10 changed files with 110 additions and 54 deletions
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22
src/osg/CollectOccludersVisitor.cpp
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@@ -11,7 +11,13 @@ CollectOccludersVisitor::CollectOccludersVisitor()
{
// overide the default node visitor mode.
setTraversalMode(NodeVisitor::TRAVERSE_ACTIVE_CHILDREN);
/*setCullingMode(VIEW_FRUSTUM_CULLING|
NEAR_PLANE_CULLING|
FAR_PLANE_CULLING|
SMALL_FEATURE_CULLING);*/
_minimumShadowOccluderVolume = 0.01;
_createDrawables = false;
}
@@ -122,11 +128,17 @@ void CollectOccludersVisitor::apply(osg::OccluderNode& node)
ShadowVolumeOccluder svo;
if (svo.computeOccluder(_nodePath, *node.getOccluder(), *this,_createDrawables))
{
// need to test occluder against view frustum.
// std::cout << " adding in Occluder"<<std::endl;
_occluderList.push_back(svo);
if (svo.getVolume()>_minimumShadowOccluderVolume)
{
// need to test occluder against view frustum.
std::cout << " adding in Occluder"<<std::endl;
_occluderList.push_back(svo);
}
else
{
std::cout << " rejecting Occluder as its volume is too small "<<svo.getVolume()<<std::endl;
}
}
}